Hi Zemax Community,
Can you help me with this? I have read the passage
https://support.zemax.com/hc/ja/articles/1500005580162-%E5%85%A5%E9%96%80%E3%82%AC%E3%82%A4%E3%83%89-1-4-%E6%AD%A3%E8%A6%8F%E5%8C%96%E5%BA%A7%E6%A8%99%E7%B3%BB
and want to confirm that my understanding is right.
Things want to do
![](https://uploads-us-west-2.insided.com/zemax-en/attachment/08d2e328-84fc-4ac0-be28-7a9f195d2946.png)
To trace the specified field & wavelength light ray location on the image surface.
here are wave1 and wave2 at field1 (my model is a spectrometer)
I use REAY in merit function and set the wave1 and wave2 coordinate as below
but I am not sure whether it is right , could you please help me see it ?
![](https://uploads-us-west-2.insided.com/zemax-en/attachment/7c7003ee-8ef9-47dd-8f94-4461fe77401e.png)
Thanks
Yang
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Best answer by Sandrine Auriol 26 January 2023, 14:32
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